Lubricator.



I. LA-RSEN.

' LUBRIGATOR.

APPLICATION FILED NOV. 20, 1911. 1,030,667, Patented June 25, 1912.

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IVERT LARSEN, OF CHICAGO, ILLINOIS.

LUBRIGATOR.

Specification of Letters latent.

Application filed November 20, 1911.

Patented June 25, 1912.

Serial No. 661,443.

To all whom it may concern:

Be it known that I, IVERT LARSEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Lubricators, of which the following is a specification.

My invention relates particularly to lubricating devices of the rotary force-feed type; and my primary object is to provide an oiler of simplified construction, increased durability, and improved operation.

The invention is illustrated in its preferred embodiment in the accompanying drawing, in which- 1 Figure 1 represents a vertical sectional view of the improved lubricator constructed in accordance with my invention; and Fig. 2, a section taken as indicated at line 2 of Fig. 1.

In the form illustrated, the device comprises a reservoir, or chamber, A; and pumping mechanism B mounted therein. The reservoir may be of any suitable form or construction. As shown, it is in the form of a cylinder having a bottom wall 1 and an external flange 2 at its upper end, shown connected by bolts 3 to the bottom of a crank case 4, the upper end of the cylinder being open and in registration with an opening 5 in the bottom of the crank case. Any preferred arrangement may be used, however.

The mechanism B, in the form illustrated, comprises a stationary member, or cylinder, 6, having its lower end rigidly secured to the bottom of the casing A by a bolt 7; a cam-plate, or disk, 8, secured on the lower end of the stationary member 6 and equipped with a series of annularly arranged cams 9; and a rotary pump-carrying cylinder 10, surmounting the plate 8 and encompassing the stationary cylinder 6. The member 6 has an enlarged upper end presenting an external flange 11, which has a flat annular lower face against which the flat faced end of the rotary cylinder 10 bears. Extending vertically through the flanged upper portion of the stationary cylinder 6 are ports, The ducts 12 are annularly arranged, and with them communicate the tubes, or leads, 13, through which the oil may be conducted to the bearings (not shown) which are to be lubricated.

The rotary cylinder 10, which is journaled on the stationary cylinder or post 6 and confined between the collars 8 and 11 thereof, is equipped with a spur-gear 14, with which meshes a pinion 15 mounted on the lower end of a shaft 16, which may be operated from any source, as for instance, from the shaft of an engine. -Mounted on the rotary cylinder 10 is a pump 17 whose axis is parallel with the axis of the cylinder. The bore or cylinder of the pump is formed integrally with the rotary member 10, and has at its upper end a port 18, which is adapted to be brought successively into registration with the annularly arranged ports 12. The piston 19 of the pump is formed hollow and has an open upper end, while the shank 20 of the piston projects from the lower end of the pump cylinder and is equipped with a wheel 21 mounted on a pivot 22, which has a shank portion 23, which moves in a guide 24 with which the rotary member 10 is provided. Within the hollow piston is confined a coil-spring 25 whose upper end bears against the upper end of the pump cylinder bore, while the lower end bears against the bottom of the bore in the piston itself. The bore in the piston communicates with a port or axial passage 26 in the piston stem, which is guarded by an inwardly opening ball valve 26, and the passage 26 communicates with a transverse passage 27, which is adapted to serve as an intake for the oil when the piston descends.

The plate 8 is preferably formed separately from the stationary cylinder 6, being of annular form and fitted on the reduced lower end of the member 6, where it is secured by a set-screw 28. The cams 9 are substantially in the form of truncated cones and have threaded shanks which pass through threadedperforations in the plate 8, and are secured or locked by nuts 29.

The operation will be readily understood. The cylinder 10 is rotated through the medium of the wheel 14, and carries the pump in an annular path. In this operation, the camwheel 21 rides on the upper fiat surface of-the plate 8 and over the cams 9, as they are encountered. When the piston descends, the oil (contained in the chamber A) is drawn into the hollow piston through the ports 27 and 26, and when the cam wheel rides over a cam, the charge of oil is discharged through the port 18 and that one of the ports 12 of the stationary cylinder with which the port 18 happens to be in V the bore of the pump cylinder, which tends to maintaina close joint between the rotary member andthe flange 11, so that at the moment of discharge such pressure will serve to prevent leakage.

It may be added that the simplified construction herein shown is well adapted to use in connection with the crank case of an engine in a system where the oil is delivered copiously through'the leads 13 to the several bearings of the machine and the excess oil is allowed to return to the crank case. In such an arrangement, adjustmentof the cams 9 is unnecessary after they are once secured, as the, piston operates always to deliver an excess of oil to the bearing.

turers at a very reasonable price.

It may be added that the shaft 16 is preferably journaled in bearings 30 and 31 carried by the flanges l1 and 8, respectively, of 1 r the stationary cylinder 6.

i the combination of a stationary member hav- The foregoing detailed description has been given for clearness of understanding only, and no undue limitation should be understood therefrom, but the appended claims should be construed as broadly as permissiblein view of the prior art.

What I regard as new and desire to secure by Letters Patent is:

1. In a device of the character set forth,

ing a series of outlet ducts, a rotarymember equipped with a pump having an outlet i pumping device mounted therein, comprising a stationary member provided with a series of outlet ducts, a rotary member equippedwith a pump having an outlet duct adapted to be brought into registration suc cessively with said first-named ducts, said pump having a piston provided with a longitudinal passage 'andwith an inlet duct:

having a series of outlet ducts therein, an

encircling annular rotary member encompassing said first-named member and confined between said flanges, a pump carried by said rotary member and having an outlet duct adapted to register successively with said first-named ducts,said piunp having a hollow piston provided at its lower end with an inlet duct, means for guarding the intake of oil through said last named duct, and cams projecting above the lower flange of the stationary member and adapted to actuate said piston.

4. In a device of the character set forth, the combination of an oil reservoir, a stationary cylinder fixedly secured to the bottom of said reservoir and providedat its upper end with an external flange having a series of outlet ducts opening at ts lower surface, an enoompasslng rotary cylinder Y journaled on said stationary cylinder "and The simplicity of the invention enables a lubricator which is thoroughly mechanical 1 and'of durable construction to be manufactured at very low cost, so that it can be profitably supplied to automobile manufacl having its upper end abutting against" the lower surface of said flange, said' rotary cylinder equipped with a pump having an outlet duct adapted to register successively with said first-named ducts, said pump having a piston provided with a depending stem, and a series of cams arranged about the lower end of said stationary cylinder and adapted to actuate said piston.

5. In a device of the character set forth, the combination of an oil reservoir, a stationary cylinder fixedly mounted on the bottom of said reservoir and equipped at its upper and lower ends with external flanges, the upper flange having a series of outlet ducts therethrough, a series of cams: carried by said lower flange, a rotary cylinder journaled on said stationary cylinder and confined between said flanges .and equipped with a pump provided with an outlet duct adapted to register successively with said firstnamed ducts, said pump having a piston provided with a depending stem adapted to be actuated by said cams.

6. In a device of the character set forth, the combination of a stationary cylinder equipped with a flange provided with a series of outlet ducts, an encircling rotary cylinder equipped with a pump provided with an outlet duct adapted to registersuccessively with said first-named ducts, said pump having a hollow piston provided with an inlet duct at its end opposite said. outlet duct, a coil-spring in said piston adapted to retract the piston, and an annular series of cams adapted to actuate the piston against the force-of said spring.

7. In a device of the character set forth, the combinatipn'of an oil reservoir, a stationary member-mounted therein and having a cylindrical portion serving as a journal and surmounted by a flange provided with a series of discharge ducts with orifices at the under side of said flange, a rotary cylinder journaled on said cylindrical portion and having its upper end bearing against said flange, said rotary cylinder having a pump cylinder formed therein with a port opening at the upper end and adapted to register with said discharge ducts,

a piston having a depending stem, means for admitting oil to the pump from the lower portion of said reservoir, and a series of annularly arranged cams adapted to en gage the piston-stem.

8. In a device of the character set forth,

the combination with an oil-chamber, of a stationary cylinder fixedly mounted therein and equipped with upper and lower flanges, the upper flange having discharge ducts therein, a rotary cylinder journaled on said stationary cylinder between said flanges and equipped with a pump having an upwardly opening discharge port, the piston of said pump having a depending stem, piston-actuating cams carried by said lower flange, a wheel encircling said rotary cylinder, a bearing carried by said stationary cylinder, and a shaft journaled in'said bearing and equipped with means to actuate said wheel.

IVERT LARSEN. In presence of J. G. ANDERSON, O. C. AvIsUs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. i 

